We are pleased to provide the title and corresponding author information for all approved abstracts that were submitted to TAC 2020/21 Toronto - our thanks go out to all submitters.
All corresponding authors are reminded that, in order to be considered for an oral or poster presentation assignment, a full technical paper must be submitted by April 30, 2021 using the online submission process (see Submission Details for complete details.)
Transit Tunnels: Design & Construction
A Comparison of Tunnel Sizes and Configurations for Transit Tunnels
Advances in Shotcrete Technology for Groudn Support in Tunnels and Mines in North America
Being Compliant and Competitive in Transit Tunnel Projects, “Systems and Tunnel Fit-Out Design” Can be the Key
Challenges of metro projects: Selected Aspects and Comparison of Metro projects in Europe and Asia
Concreting of tunnels using an automated formwork filling system
Design and Construction Considerations of the Bishop Mechanical Ventilation Adit for the Green Line of the Montreal Metro
Design and Construction of the Deepest Underground Station in Canada
Existing Utilities and Services Impact on New Tunnel Projects
Ground freezing and excavation of the Museum Island metro station under a river in central Berlin – challenges and experiences
Jet Grouting for Tunneling Applications in Ontario
Long, Curved Microtunnelling Drives in Environmentally Sensitive and Highly Urbanized Area
Bradley M Marin
Review of Geological and Geotechnical Databases in the City of Toronto
Risk Assessment Protocols applied to Tunnel Rehabilitation
AECOM Canada Limited
Single-bore versus twin-bore tunnels. The uncovered truths behind urban transit tunnel configuration selection.
Giuseppe M. Gaspari
Tight-Fit Tunneling in Downtown Area – Preliminary Design of Underground Interchange Stations for Toronto Relief Line
Trenchless and Rehabilitation
Calamity Creek Twin Culvert Installation "EPB Pipejacking Through Challenging Ground Conditions"; Temiskaming Shores, ON, Canada
CRS Tunnelling Inc.
Construction of Inglewood Sanitry Trunk
Durability Design for Underground Structures
Highland Creek Sanitary Trunk Rehabilitation by GRP Lining
Maurice C Batchoun
MICROTUNNELLING THROUGH DENSE, GRANULAR GLACIAL DEPOSITS IN BC LOWER MAINLAND URBAN ENVIRONMENT
Resiliency for the Future of Infrastructure: Growing the Rehabilitation Market
Review of Thrust Force in Direct Pipe Installation
Successful delivery of underground gas pipeline via use of micro-tunneling techniques
The Alouette-Stave Tunnel Investigation and Evaluation of its Performance in a lLrge Earthquake
Trenchless Installation of Twin Pipe Crossing in Bouldery Glacial Till under Highway 12, Midland, Ontario
Robert M Ng
Peto MacCallum Ltd.
Victoria, B.C. Cross Harbour HDD Force Main and Microtunneled Outfall Design and Construction
A Constitutive Model for Time-Dependent Stress-Corrosion in Continuum Mechanics
James C Innocente
Adaptation of Ground Relaxation in Tunnel Design
Advanced analytics based on dynamic BIM models
iC interdisciplinary consultants Canada Ltd.
An Improved Understanding of the Characterization and Strength Properties of Soils in the Toronto Area
Application of the V-GSI System for Field Assessments of Rock Mass Quality in a Transportation Tunnel: Validation through Numerical Modelling
Golder Associates Ltd.
Artificial Neural Network use for Pile Settling Prediction in Tunnel Works
Clara Magalhaes Toffoli
Asset management innovative technologies in tunneling. A critical aspect for a successful alternative delivery project.
Paul Merlin Francis
Northway/Photomap/Remote Sensing Ltd.
Determination of settlement trough width by geotechnical parameters of soil based on field measurements
Rahsaztarh Consulting Engineers
Development of a physical model for the study of polymer injections in concrete fractures
Khalil El Mekari
École de technologie supérieure
Evaluation of Analytical Solutions for Pervious Liner Design using Continuum and Discontinuum Models
Fiber-Reinforced Shotcrete Applications and Testing Overview
William Philip Geers
Bekaert Underground Solutions
The Implementation of the Ubiquitous Joint Model to Capture Small Scale Defects in Sedimentary Rock Masses for Underground Excavations
Tunnel Permanent Liner Design - Optimization Through Automation
Updates on the application of fibre reinforced concrete in major tunneling projects in Canada with existing codes.
Shibli A. Abi-Shaheen
Use cases for geotechnical models in BIM-projects
A Realistic Three-Dimensional Finite Element Model for the Simulation of Mechanized Tunnel Excavation in Toronto
Advanced tools for optimal advance and ring building on large-diameter TBMs
VMT USA Technical Measurement Solutions Inc
Inspection Criteria for Successful Refurbishment of TBM Main Drives
DynaMEK Group Ltd.
Kemano T2 Precast Concrete Tunnel Lining
Large-diameter mechanized tunnel excavation boost the efficiency of underground infrastructures
Herrenknecht Tunnelling Systems
Lessons Learned from Tunnelling in Congested Urban Environments
Keivan Pak Iman
NEW WORLD RECORD FOR EPB TBM TUNNEL EXCAVATION. QUITO METRO LINE 1 PROJECT
FERNANDO VARA ORTIZ DE LA TORRE
PERFORMANCE ANALYSIS AND DESIGN GUIDELINES FOR THE MCNALLY SLAT RETENTION SYSYEM FOR OPEN GRIPPER TBM'S IN ROCK
ASI Group Ltd
Shielded Tunneling in Hard Rock Conditions with Potential for High Water Inflows and Pressures
The Robbins Company
Slurry Treatment Plants in mechanized tunneling operations – Safety, boosting and cost factor for jobsites
The Goldilocks Zone – A Novel Tool to Aid Vertical Alignment Selection
Tunnelling in Toronto Shale- Construction of Coxwell Bypass Tunnel Project
Black & Veatch
Case Histories and Challenging Projects
Alternative Solution for Double Pass Lining – MTS 01 IDRIS project in Doha, Qatar
Ashbridges Bay Integrated Pumping Station – CC2 A Unique SEM Tunnel Crossing Below an Existing Pile Supported Sewer
Choice of the Tunneling Method – The Key Factor for Success
Design and Construction Considerations of the Utility Tunnel at the Suncor Refinery under the Highway 40 in Montreal-Est
Design and Construction of Large Diameter Water Retention Shafts for the Coxwell Bypass Tunnel
Eupalinos Tunnel – First tunnel to be excavated simultaneously from both ends in the 6th century B.C.
Micro-tunnels risk mitigation supported by geotechnical investigations. Case histories in Alberta and Ontario
AECOM Canada Ltd.
Monitoring Tunnel Effects on Piezometric Levels in a Dynamic Groundwater Flow Regime
Golder Assoviated Ltd
Observational design and practical lessons at the Ottawa CSST Project
PSGi Overview with a case study, Waterproofing of a Seepage Water Tunnel
Geoform Canada Ltd.
Quality Control of Shotcrete for Ground Support
Thames Tideway Tunnel, UK – Major Asset Potential Damage Assessment
Eric Kwok-On Wu
The Pingston Hydro Project - a Review After Fifteen Years of Operation
Tunnelling in Swelling Rock – A Case Study of Testing, Design, and Validation on the Coxwell Bypass Tunnel Project
Verification and Update on High Pressure Concrete Plug Leakage Remediation
Seung Han Kim
Assessment of Potential Damage to Utilities due to SEM Tunneling
Design and Construction Challenges of SEM Construction in Urban Area: Chinatown Station, San Francisco, CA
Nasri A Munfah
Highway 401 Rail Tunnel – Design and Construction of Pre-Support Pipe Canopy and Temporary Works
R.V. Anderson Associates Limited
LINE 2 OF LIMA´S SUBWAY – DESIGN AND CONSTRUCTION OF A ROLLING STOCK GARAGE BELOW CENTRAL HIGHWAY
JORGE PICON COUSELO
Mined Tunneling for the Edmonton Valley Line LRT Project
Andrew Gregory Cushing
Arup Canada, Inc.
Soil Stabilization for Cross Passages on Eglinton East Tunnels
Keller Foundations Ltd.
Tunnelling one of the most challenging projects in North America: Hwy 401/409 Rail Tunnel Project
Geoform Canada Ltd.
Safety and Risk Management
Alternative Construction Methodologies for Shaft Linings to Reduce Risk and Cost in the Urban Environment
Optimizing Performance and Safety of Old Underground Transit Systems, by Systematically Integrating and Implementing Fire, Reliability and Safety Req.
Selecting Contingency Amounts for Final Construction Cost Estimates on Mega-Projects
The Issue of Compliance and Safety in Transit Tunnels- A Qualitative Risk Analyses
Trends in Underground Construction: Risk Sharing, Dispute Resolution, and Innovation
What about the cost of tunnels? A review of some recent Canadian tunnelling case histories.
University of Toronto
East Brampton Watermains
Jacobs Engineering Group
East to West Diversion Sanitary Trunk Sewer
Fairview Cove Trunk Sewer, Halifax’s First Microtunnel Project
Stanley Park Water Supply Tunnel Project